EPA Method 633.1 Analytes Back Catalog number: 40049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682169 (-)-delta-9-THC, 10.0 µg/ml, Methanol, 1ml Price on request 79161 Pentachloroanisole Price on request 71709 1-Chloro-2-nitrobenzene Price on request